Sources

Carranza, F. A. "The Discovery of Anesthesia: The Tragic History of Wells and Morton." University of California Los Angeles. (Jan. 27, 2012) http://www.dentistry.ucla.edu/pic/members/carranza/anesthesia.html

Hardy, Rob. "Ether Day: The Strange Tale of America's Greatest Medical Discovery and the Haunted Men Who Made It." The American Journal of Psychiatry. Dec. 1, 2001. (Jan. 27, 2012) http://ajp.psychiatryonline.org/article.aspx?Volume=158&page=2103&journalID=13

Library of Congress. "The History of the Edison Cylinder Phonograph." (Jan. 27, 2012) http://memory.loc.gov/ammem/edhtml/edcyldr.html